private void CloseAllOpenInstance()
{
if (orderEntryView != null)
{
orderEntryView.Close();
}
if (reprintBill != null)
{
reprintBill.Close();
}
if (inwardEntry != null)
{
inwardEntry.Close();
}
if (productMaster != null)
{
productMaster.Close();
}
if (customerMaster != null)
{
customerMaster.Close();
}
if (supplierMaster != null)
{
supplierMaster.Close();
}
if (sendEmail != null)
{
sendEmail.Close();
}
}